Delayed action socket



2 Sheets-Sheet l l. HARKAVY DELAYED ACTION SOCKET Filed Aug. 2, 1941 Nov. 17, 1942.

ATTORNEY w RX 0 r T a y mm w r I Nov. '17, 1942.. HARKAVY 2,302,214

DELAYED-ACTION SOCKET Filed Aug. 2, 1941 2 Sheets-Sheet 2 \NVENTOR [runny flarkary ATTORNEY Patented Nov. 17, 1942 UNITED STATEE:

FATENT OFFICE DELAYED ACTION SOCKET Irving Harkavy, New York, N. Y.

Application August 2, 1941, Serial No. 405,169

5 Cilaims. (Cl. 173-346) This invention relates to new and useful improvements in a delayed action socket.

More particularly, this invention relates to a socket construction for receiving a lamp or other electrical article, or a socket construction adapted to engage in a conventional socket and adapting it to receive a conventional lamp or other similar article, and an arrangement for delaying the action which the socket or attachment controls. It is then possible to turn off the socket and leave a room or other place while the light or other mechanism remains lit or operative for a short period, giving the person an opportunity to leave. Or, it is possible that the delayed action be such that the socket may be turned on, and the light or apparatus will not go on for a short period thereafter. This latter arrangement is particularly useful in photographic work, and other situations.

The invention proposes to characterize the delayed action socket by the fact that it has an oscillatory member connected with a spring con trolling an oscillatory contact having an open position at one end of its amplitude of oscillation, and a closed position at the other end of its amplitude of oscillation, and a construction for manually controlling the oscillatory member and contact to obtain the delayed action desired.

It is proposed that a manually turnable and depressible stem be provided, slidably and non rotatively mounted through said member axially of its axis of oscillation, and that a delayed action means be provided for urging said stem out- Wards when depressed, and that a bolt be operatively connected with said stem for holding said 1 contact stationarily in either of its positions while said stem is in its depressed position.

Another object of the invention is the construction of a device as mentioned which is simple and durable and which may be manufactured and sold at a reasonable cost.

'For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings, and to the appended claims in which the various novel features of the invention are more particularly set forth,

In the accompanying drawings forming a material part of this disclosure:

Fig. 1 is a side elevational view of a delayed action socket provided with a lamp, and embodying this invention.

Fig. 2 is an enlarged vertical sectional view of the socket shown in Fig. 1.

Fig. 3 is a fragmentary vertical sectional view taken on the line 3-3 of Fig. 2.

Fig. 4 is a sectional view similar to Fig. 3 but illustrating the parts in a dilferent position.

Fig. 5 is a fragmentary vertical sectional view taken on the line 55 of Fig. 2.

Fig. 6 is a Vertical sectional view of a dashpot used in the device.

Fig. 7 is a perspective View of the oscillatory contact of the device.

Fig. 8 is a schematic wiring diagramof the device.

Fig. 9 is a side elevational view of a delayed action attachment socket shown provided with a lamp and mounted in a conventional socket.

Fig. 10 is an enlarged fragmentary sectional view of the attachment socket shown in Fig. 9.

Fig. 1]. is a front elevational View of a delayed action switch constructed in accordance with another embodiment of this invention.

Fig. 12 is an enlarged vertical sectional view taken on the line I'2- l 2 of Fig. 11.

Fig. 13 is a fragmentary horizontal sectional view taken on the line l3--l 3 of Fig. 1 2.

Fig. 14 is a front elevational view of another type of delayed action switch constructed in accordance with this invention,

Fig. 15 is a fragmentary enlarged sectional view taken on the line I5l 5 of Fig. 14.

The delayed action socket, in accordance with this invention, includes an oscillatory member 12 connected with a spring l3 controlling an oscillatory contact member l4 having an open position at one end of its amplitude of oscillation, as shown in Fig. 3, and a closed position at the other end of its amplitude of oscillation as shown in Fig, 4. A manually turnable and depressible stem l 5 is slidably and non-rotatively mounted through the member l2 axially of its axis of oscillation. Delayed action means It is provided for urging the stem I5 outwards when depressed. A bolt I1 is operatively connected with the stem [5 and is adapted to hold the contactmember [4 stationarily in either of its positions while said stem P5 is in its depressed condition.

The oscillatory member I2 is provided with a tubular top portion [8 of non-circular shape in transverse cross section through which the stem l5 passes. For this reason the stem 05 is slidable through the member l2 and yet these parts are so connected that when the stem I5 is turned the member 12 will be moved. The stem I5 is turnably and slidably supported in a frame [9 which is mounted on a casing 20 of the socket. The frame is has a pair of parallel side walls 21 and 22 between which the oscillatory member is; is disposed so that the member i2 is held from sliding. The stem l5 turnably passes through these side walls 25 and 22 The frame it is mounted upon the casing 23 with several fasten ing elements 23. The casing has a recesse area 24 into which the oscillatory contact projects.

The oscillatory contact id is of substantially U-shape (see Fig. '7) and is provided with an inwardly directed trunnion 25 which engages into openings in the side walls 2| and 22 of the frame H! for pivotally supporting the oscillatory contact. The contact member M is also provided with a pair of contact springs 26 mounted upon the sides thereof. These contacts 25 are cooperative with a pair of stationary terminals 21 and 28 fixedly mounted on the casing 29. A cable 29 from a source of power, enters the housing 30 of the socket. This cable 29 has one lead 3| connected with the contact 21, and another lead 32 connected with a threaded shell 33 mounted within the open end of the housing 35. The contact 28 is connected by a lead 34 with a central contact 35 mounted at the base of the threaded shell 33. This threaded shell 33 is adapted to receive a conventional electric light or other device to which current is to be supplied through an end contact and a shell contact.

The housing 30 includes a cylindrical portion 36 lined with an insulation material liner 3?, and a cap portion 38 which is also provided with an insulation lining 39. The cylindrical portion 36 is provided with a slot 40 through which an insulation handle 4| which is mounted on the stem |5 projects. The handle 4| may be turned to turn the stem i5, or the handle 4| may be pushed inwards to depress the stem l5.

The spring |3 is connected between a central downwardly projecting lug 42 on the oscillatory member I2, and the bottom central portion of the oscillatory contact member M. This spring |3 normally urge the oscillatory member |2 in one direction and the oscillatory contact M in the other direction. A pair of pins 43 and 44 are mounted on the wall 2| and limit turning of the member |2. Pins 45 and 46 are mounted on the wall 2| and extend into the path of motion of the oscillatory contact member l4 and limit turning thereof. The arrangement is such that when the oscillatory member i2 is engaged against the pin 64 the oscillatory contact member M will be forced against the pin 45.

When the stem I5 is turned to engage the oscillatory member |2 against the pin 43 the spring |3 will snap the oscillatory contact member id against the pin 45. Figs. 3 and 4 show the different positions for the oscillatory member I2 and the oscillatory contact member Hi. When the oscillatory contact member I4 is urged against the pin 46, the contacts 25 will engage the contacts 2'! and 23, closing the circuit between the lead 3| and the lead 34. This condition of the parts is shown in Fig. 4. Otherwise, the circuit will be opened when the parts are in the position as shown in Fig. 3.

The delayed action means l8 includes a cylinder 4'! stationarily mounted on the casing 25. A piston 48 is slidable in the cylinder 41. The stem l5 connects with the piston 48. The piston 48 has several air passages 49 which are normally closed by a flexible gasket 50 extended across the piston 48. A spring 5| normally urges the piston 48 outwards. A needle valve 52 is mounted upon the inner end of the cylinder 49. When the stern in {IL I5 is depressed the piston 48 will be moved to the inner end of the cylinder 41, and during this motion the air from the interior thereof will pass out through the openings 49 and pass the free edges of the flexible gasket 50. The spring 5| tends to move the piston 48 outwards and so tends to move the stem l5 outwards. However, this outward action will be relatively slow, depending upon the setting of the needle valve 52. This needle valve permits air to enter the cylinder 41. However, when the piston 48 is moving outwards the flexible gasket 50 closes the passages 49. The outward motion of the piston 48 is therefore delayed, being controlled by the entrance of air through the needle valve 52.

The bolt H has a hub portion 53 through which the stem 5 freely passes. A pair of flanges 54 are fixedly mounted on the stem l5 and engage the two ends of the hub portion 53. A pair of arms 55 project from the hub portion 53 and are provided with base portions 56 which slidably engage in grooves 51 formed in the casing 20. These arms 55 are provided with projecting pins 58 adapted to selectively engage an opening 59 formed in the adjacent contact 26. In Fig. l a lamp 60 is illustrated in the delayed action socket.

The operation of the device is as follows:

The handle 4| may be turned in one direction or the other to cause the oscillatory contact member I4 to snap from one of its positions to the other of its positions to turn the current on or off for lighting or turning oil the lamp 5!), instantaneously. When delayed action is desired the handle 4| is first pressed inwards before it is turned. When the handle 4| is pressed inwards the stem |5 will be depressed and one of the pins 58 of the bolt I! will engage into the opening 59 of the oscillatory contact member M. This pin 58 will hold the oscillatory contact member |4 fixed as long as the stem |5 remains depressed.

The handle 4| is then turned so as to move the oscillatoiy member |2 to its other position past the oscillatory contact |4 loading the spring H3. The spring |3 then tries to snap the oscillatory contact l4 to its other position but is restrained by the fact that the contact is being held by the pin 58. This causes a delay, in which time a person may leave the room or have the grace of a predetermined period before the socket functions. The spring 5| will slowly urge the stem |5 back to its extended position, and so a time will come when the pin 58 will come out from the opening 59. Immediately the spring l3 snaps the contact member |4 into its other position and this turns on or cuts off the current, depending in which direction the oscillatory contact 4 is functioning.

In Figs, 9 and 10 a modified form of the invention has been disclosed which distinguishes from the prior form in the fact that the delayed action socket is in the nature of an attachment 6|. This attachment 6| is shown engaged into the usual lamp socket 62. The lamp 60 is engaged in the attachment 6|. This attachment 5| is provided with ah ousing 39 having a cylindrical portion 36 and a shell contact 38'. This shell contact 38 is threadedly engaged in the shell contact B3 of the socket 62. The shell contact 38 is provided with an insulation base 39 which supports a central contact 54 .engaging the central contact of the socket 52. The central contact 64 is connected by a lead 3| with the contact 58. A lead 32 connects the shell contact 38' with the shell contact 33. In other respects this form of the invention is similar to the previous form and like parts are identified by like reference numerals.

The standard electric socket 62 may be turned on and oif in the usual way. The attachment socket Bl may be turned on and ofi in the same way as previously described relative to the delayed action socket shown in Figs. 1 to 8. In other respects the operation of these devices are identi cal.

It is to be understood that the stem I5 may be turned either by a knob, pull-chain or a suitable push-button arrangement. In Figs. 11 to 13 inclusive another form of the invention has been disclosed, but in this instance it has been applied to a delayed action switch capable of controlling an electric circuit. More specifically, the switch includes an oscillatory member l2 connected with a spring I 3 controlling an oscillatory contact member l4 having an open position at one end of its amplitude of oscillation, and a closed position at the other end of its amplitude of oscillation, similar to the construction and arrangement described in the preferred form of the invention. The oscillatory member i2 is supported on a stern l5 which is mounted on the frame [9. The contact member 14 is provided with a pair of contact springs 25 mounted on the sides thereof. A handle 65 is mounted upon the oscillatory member l2 and extends upwards through an opening 66 formed in a cover plate 6'! for the switch. This handle 65 may be thrown up or down to cause the switch to be turned on and cit, as desire-d.

A delayed action means l0 is associated with r the oscillatory contact member M in a certain way. More specifically, the delayed action means it includes a depressible stem 'l'l extended through the switch casing 61 and provided with a head 72 on its extended end. The stem H connects with a dashpot which includes the cylinder ll and the needle valve 52. A pin 73 is mounted on the stem 12 and engages a slot 14 in an arm l5. This arm i5 is fixed on a shaft 16 turnably supported in standards Tl. The shaft 16 is provided with two arms 18 carrying bolts 19 which are adapted to selectively engage into the opening 59 of the contact spring 26.

In other respects this form of the invention is similar to the previous forms and like parts are identified by like reference numerals.

The operation of this form of the invention is as follows:

The handle 65 may be pushed up or down to turn the switch on or off in the usual Way. The contact springs 25 may close an electric circuit between the contacts 27 and 23 which may I be connected up with electric leads 88 and BI to control said electric circuit. If it is desired that the switch have a delayed action it is necessary that the handle 12 be depressed prior to operation of the handle 55. When the handle 12 is depressed the stem ll will be moved downwards. The pin T3 then moves the arm 15 which turns the shaft '55, which in turn moves the arm i8 so that one of the pins 79 engages in the opening 59 of the spring contact 26. Then when the handle i5 is thrown to operate the switch, the oscillatory contact M will be held for a short period of time. This period is controlled by the action of the delayed action means Hi. The dashpot of this means slowly moves the stem H upwards until it reaches a position in which the bolt 19 comes out from the opening 59 of the spring contact 26. At this instant the switch operates.

(iii

In Figs. 14 and 15 another form of the invention has been disclosed which is very similar to theform shown in Figs. 11 to 13, distinguishing merely in the construction of the switch proper. In this form of the invention a bar 82 is fixedly mounted across the oscillatory member [2. The bar 82 supports a button 83 at one end and another button 83 at the other end. These buttons pass through openings in the cover plate 61' of the switch. One or the other of the buttons 83, 84 may be pressed downwards to pivot the bar 82 causing the other button to come upwards. Furthermore, the pivoting of the bar 82 operates the oscillatory member l2. Thus the switch may be turned on or off. In other respects this form of th invention is similar to the previous forms.

While I have illustrated and described the preferred embodiments of my invention, it is to be understood that I do not limit myself to the precise constructions herein disclosed and the right is reserved to all changes and modifications coming within the scope of the invention as defined in the appended claims.

Having thus described my invention, what I claim as new, and desire to secure by United States Letters Patent is:

1. In a delayed action socket having an oscillatory member connected with a spring controlling an oscillatory contact having an open position at one end of its amplitude of oscillation and a closed position at the other end of its amplitude of oscillation, a manually turnable and depressible stem slidably and non-rotatively mounted through said member axially of its axis of oscillation, delayed action means for urging said stem outwards when depressed, and a bolt operatively connected with said stem for holding said contact stationarily in either of its positions while said stem is in its depressed position.

2. In a delayed action socket having an oscillatory member connected with a spring controlling an oscillatory contact having an open position at one end of its amplitude of oscillation and a closed position at the other end of its amplitude of oscillation, a manually turnable and depressible stem slidably and non-rotatively mounted through said member axially of its axis of oscillation, delayed action means for urging said stem outwards when depressed, and a bolt operatively connected with said stem for holding said contact stationarily in either of its positions while said stem is in its depressed position, said member being provided with a non-circular tubular portion through which said stem engages, said stem having a complementary part to slidably and nonrotatively connect with said tubular portion.

3. In a delayed action socket having an oscillatory member connected with a spring controlling an oscillatory contact having an open position at one end of its amplitude of oscillation and a closed position at the other end of its amplitude of oscillation, a manually turnable and depressible stem slidably and non-rotatively mounted through said member axially of its axis of oscillation, delayed action means for urging said stem outwards when depressed, and a bolt operatively connected with said stem for holding said contact stationarily in either of its positions While said stem is in its depressed position, said depressible stem being provided with an insulation handle by which it may be manipulated.

4. In a delayed action socket having an oscillatory member connected with a spring controlling an oscillatory contact having an open powhile said stem is in its depressed position, said #1 bolt having a hub portion through which said stem tumably passes, and flanges on said stem engaging the ends of said hub portion so that the bolt moves when the stem is moved.

5. In a delayed action socket having an oscillator member connected with a spring controlling an oscillatory contact having an open position at one end of its amplitude of oscillation and a closed position at the other end of its amplitude of oscillation, a manually turnable and depressible stem slidably and non-rotatively mounted through said member axially of its axis of oscillation, delayed action means for urging said stern outwards when depressed, and a bolt operatively connected with said stem for holding said contact stationarily in either of its positions while said stem is in its depressed position, said bolt having a hub portion through which said stem turnably passes, and flanges on said stem engaging the ends of said hub portion so that the bolt moves when the stem is moved, said bolt being also provided with arms slidably supported, these arms having pins selectively engageable with a complementary opening formed in said oscillatory contact.

IRVING HARKAVY. 

